WASHINGTON (AP) — A hidden network of U.S. companies, coordinated by a prominent defense contractor, played a key role in the covert airlift that transported terrorism suspects and their American minders, according to newly disclosed documents in a New York business dispute between two aviation companies.

The court files of more than 1,700 pages shed new light on the U.S. government's reliance on private contractors for flights between Washington, foreign capitals, the U.S. military base at Guantanamo Bay, Cuba, and, at times, landing points near once-secret, CIA-run overseas prisons. The companies included DynCorp, a leading government contractor that secretly oversaw a fleet of luxury jets, and caterers that unwittingly stocked the planes with fruit platters and bottles of wine for the transoceanic routes, according to the court files and testimony.

The business dispute stems from an obscure four-year fight between a New York-based charter company, Richmor Aviation Inc., which supplied corporate jets and crews to the government, and a private aviation broker, SportsFlight Air, which organized flights for DynCorp. Both sides cited the government's program of forced transport of detainees, or "extraordinary rendition," in testimony, evidence and legal arguments. The companies are fighting over $874,000 awarded to Richmor by a New York state appeals court to cover unpaid costs for the secret flights.

The court files — they include contracts, flight invoices, cell phone logs and correspondence — paint a sweeping portrait of collusion between the government and the private contractors that did its bidding — some eagerly, some hesitantly. Others turned a blind eye.

Trial testimony studiously avoided references to the Central Intelligence Agency. When lawyers pressed a witness about flying terrorists from Washington or Europe to Guantanamo Bay, Columbia County, N.Y., Supreme Court Judge Paul Czajka put on the brakes: "Does this have anything to do with the contract? I mean, it's all very interesting, and I would love to hear about it, but does it have anything to do with how much money is owed?" At another point, the name of a high-level CIA official was mentioned, but the official's intelligence ties were not divulged.

Among the new disclosures:

—DynCorp, which was reorganized and split up between another major contractor and a separate firm now known as DynCorp International, functioned as the primary contractor over the airlift. The company had not been previously linked to the secret flights.

—Airport invoices and other commercial records provide a new paper trail for the movements of some high-value terrorism suspects who vanished into the CIA "black site" prisons, along with government operatives who rushed to the scenes of their capture. The records include flight itineraries closely coordinated with the arrest of accused 9/11 mastermind Khalid Sheik Mohammed and the suspected transport of other captives.

—The private jets were furnished with State Department transit letters providing diplomatic cover for their flights. Former top State Department officials said similar arrangements aided other government-leased flights, but the documents in the court files may not be authentic since there are indications that the official who purportedly signed them was fictitious.

—The private business jets shuttled among as many as 10 landings over a single mission, costing the government as much as $300,000 per flight.

According to invoices between 2002 and 2005, many of the flights carried U.S. officials between Dulles International Airport in northern Virginia and the Guantanamo Bay detention compound, where the U.S. was housing a growing population of terror detainees. Other flights landed at a dizzying array of international airports.

Some flights landed at airports near where CIA black sites operated — Kabul, Bangkok and Bucharest. Others touched down at foreign outposts where obliging security services reportedly took in U.S. terror detainees for their own severe brand of persuasion — Cairo; Damascus, Syria; Amman, Jordan; and Rabat, Morocco. Billing records show scores of baggage handlers, ramp officials, van and car providers, satellite and flight phone firms, hotels and caterers routinely serviced the flights and crews and earned tens of thousands of dollars.

The court records do not specify who was aboard the planes beyond a count of crew and passengers. But in several cases, the flights dovetail with the arrests and transport of some of the most prominent accused terrorism suspects captured in the months immediately following 9/11: Mohammed, the purported mastermind, and Ramzi bin Alshib, his key logistics man; Abd al-Nashiri, who allegedly planned the 2000 bombing of the USS Cole; and Hambali, an Indonesia terror leader tied to the 2002 bombing of a Bali nightclub. The detainees all vanished into the CIA's now-shuttered "black site" prison network and all are now at Guantanamo awaiting military trials.

President George W. Bush acknowledged the existence of the prison network in 2006, and the CIA director in 2009, Leon Panetta, said that the prisons were no longer in use. The intelligence agency has never acknowledged specific locations, but prisons overseen by U.S. officials reportedly operated in Poland, Romania, Thailand, Lithuania and Afghanistan. Detainees have claimed in legal actions that they were flown, often hooded and shackled, to the prisons, where some were exposed to simulated drowning known as waterboarding and other harsh interrogation techniques.

The inner workings of the flight program have leaked previously. Aviation logs and other records were exposed by lawsuits, European parliamentary inquiries and investigative accounts have traced patterns of some planes used in the flights. But few court and corporate records have emerged describing the backstage role of private companies that aided in the secret flights. The international human rights group, Reprieve, which discovered the court case in New York, said the material provides "an unprecedented insight into the government's outsourcing of torture."

In the court case, Richmor accused SportsFlight in 2007 of failing to pay more than $1.15 million for at least 55 missions flown by planes and crews chartered by DynCorp for government use. A state judge ruled for Richmor in January 2010, awarding the company $1.6 million. In May, an appeals court affirmed the decision, cutting the judgment to $874,000. Richmor contends it still has not been paid in full.

During the trial, Richmor's president, Mahlon Richards, carefully described flights as classified and said passengers were "government personnel and their invitees." But he also said he was aware of allegations his planes flew "terrorists" and "bad guys." In a phone interview this week, Richards said he had agreed to work with the government as a patriotic response to the Sept. 11 attacks, adding that his firm was only one of several air charter firms that provided jets.

"We thought we were doing a good thing," Richards said. He declined to specify which government agency he dealt with or describe how the flights operated, citing confidentiality agreements with the government. But he noted: "It was the government that called the shots."

SportsFlight's lawyers made the nature of the flights a central part of its legal appeal, insisting that SportsFlight's president, Don Moss, learned over time that "the flights would be going to and from Guantanamo Bay and would be used for assorted rendition missions."

During a deposition, he blurted out the name of a CIA official, a line of testimony quickly aborted by the lawyers. The official's intelligence background was not mentioned, but The Associated Press has independently confirmed the official's role in CIA operations. Contacted at his New York home, Moss would only verify that his trial testimony was accurate.

A CIA spokeswoman said the agency does not comment on pending litigation.

Previously, the most prominent company linked to the secret flights had been Boeing subsidiary Jeppeson Dataplan, which was accused in a 2007 ACLU lawsuit of providing flight planning and navigation for rendition jets. Justice Department attorneys intervened in that case, urging judges to dismiss the case on national security grounds, and a federal appeals court agreed. There is no indication the government intervened in the New York state case.

DynCorp was purchased in 2003 by Computer Services Corp., another leading federal contractor, in a $940 million merger. CSC then took on a supervising role in the rendition flights through 2006, according to invoices and emails in the court files. CSC sold three DynCorp units in 2005 to Veritas Capital Fund, a private equity firm, for $850 million, but retained ownership of other parts of the old firm. Veritas in turn sold the restructured DynCorp — now known as DynCorp International — for about $1 billion in 2010 to Cerebrus Capital Management, another private equity fund.

DynCorp International spokeswoman Ashley Burke said Wednesday that the firm "has no involvement in or information about the litigation between Richmor and SportsFlight." She added that none of the DynCorp entities listed in the court files is owned by or has any affiliation with DynCorp International.

A Computer Sciences spokesman, Chris Grandis, said the firm could not comment because of the ongoing lawsuit.

Richmor provided 10-passenger Gulfstream jets and flight crews for its government clients nearly once a month between May 2002 and January 2005, according to flight invoices. The maiden flight was a May 2002 trip from Washington to Guantanamo and back.

Every time the Gulfstream and other planes in Richmor's fleet took to the air, they carried one-page transit documents on State Department letterhead. The notices, known as "letters of public convenience" were addressed "to whom it may concern," stating that the jets should be treated as official flights and that "accompanying personnel are under contract with the U.S. government."

In trial testimony, Moss said the documents were provided from the government to DynCorp, which furnished them to Richmor. Richards said the letters were given to flight crews before they left on each flight, but declined to explain their use.

The notes, signed by a State Department administrative assistant, Terry A. Hogan, described the planes' travels as "global support for U.S. embassies worldwide."

The AP could not locate Hogan. No official with that name is currently listed in State's department-wide directory. A comprehensive 2004 State Department telephone directory contains no reference to Hogan, or variations of that name — despite records of four separate transit letters signed by Terry A. Hogan in January, March and April 2004. Several of the signatures on the diplomatic letters under Hogan's name were noticeably different.

A State Department spokesman said the department has a policy of not commenting on "alleged intelligence activities."

In some cases, the notes added that the jets were not restricted by standard federal flight rules governing aircraft for hire. Although such exemptions are vague in practice, said Gregory Winton, a former Federal Aviation Administration lawyer, they might allow pilots to avoid normal FAA restrictions on the amount of duty hours they could fly — helpful on the long international missions such as those flown by the Gulfstreams.

In some circumstances, Winton added, such diplomatic cover letters might also be used to allow pilots to deviate from their flight plans and to win cooperation from foreign authorities after an international landing. Human rights groups and foreign critics have contended that some rendition flights obscured their real destinations when they dropped off detainees at airfields near the black sites.

"When you go overseas and show up in somebody's back yard in your private plane working for the U.S. government, that's a diplomacy issue, not a flight issue," Winton said.

The court files describe even money spent for meals. A $440 catering bill from Ohio-based Air Chef for an October 2003 flight from Washington to Guantanamo showed the Gulfstream was well stocked as it headed south. It carried fruit platters, assorted muffins and bagels, deli sandwiches, potato chips, cookies and two $39 bottles of wine.

Sav Momgelli, Air Chef's vice president for sales, said the firm had no idea it had been providing meals for secret government flights.

"We don't ask questions," he said. "We're never told and we never ask. It could be a VIP, but to us it doesn't matter. It's just another customer."